邊度有計數用的鐵表download ???
回答 (2)
2007-06-30 12:32 pm
✔ 最佳答案
乜嘢係鐵表? 可唔可以講明白啲?2007-07-01 23:19:42 補充：
咁即是係 structural steel 唔係 reinforcing bar. 呢個網應該啱你. 有 I-beam, C-channel, Tee, Hollow Square, Hollow rectanglehttp://www.roymech.co.uk/Useful_Tables/Sections/steel_section_index.htm
2007-06-30 10:35 pm
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